/*
 *  Trace2DSimple, a list- based simple implementation of a ITrace2D.
 *  Copyright (c) 2004 - 2011 Achim Westermann, Achim.Westermann@gmx.de
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 * 
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 * 
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *  If you modify or optimize the code in a useful way please let me know.
 *  Achim.Westermann@gmx.de
 */
package info.monitorenter.gui.chart.traces;

import info.monitorenter.gui.chart.ITrace2D;
import info.monitorenter.gui.chart.ITracePoint2D;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

/**
 * A basic <code>{@link info.monitorenter.gui.chart.ITrace2D}</code>
 * implementation that stores the internal
 * <code>{@link info.monitorenter.gui.chart.TracePoint2D}</code> instances in
 * a <code>{@link java.util.List}</code>.
 * <p>
 * This class has the following behavior: <br>
 * <ul>
 * <li>All tracepoints that are added are stored unchanged in a LinkedList.
 * </li>
 * <li>All traceoints that are added are added to the end.</li>
 * <li>If a tracepoint is inserted whose x - value already exists in the List,
 * it is ok - the old point may remain. (no bijective assigement of X and Y)
 * </li>
 * </ul>
 * <p>
 * 
 * @author <a href='mailto:Achim.Westermann@gmx.de'>Achim Westermann </a>
 * 
 * @version $Revision: 1.16 $
 */
public class Trace2DSimple
    extends ATrace2D implements ITrace2D {

  /** Generated <code>serialVersionUID</code>. */
  private static final long serialVersionUID = -132333501493433766L;
  
  /** Internal List <ITracePoint2D>. */
  protected List<ITracePoint2D> m_points = new LinkedList<ITracePoint2D>();

  /**
   * Creates an empty trace.
   * <p>
   */
  public Trace2DSimple() {
    this(Trace2DSimple.class.getName() + "-" + ATrace2D.getInstanceCount());
  }

  /**
   * Creates an emtpy trace with the given name.
   * <p>
   * 
   * @param name
   *          the name that will be displayed below the chart.
   */
  public Trace2DSimple(final String name) {
    this.setName(name);
  }

  /**
   * @see ATrace2D#addPointInternal(info.monitorenter.gui.chart.ITracePoint2D)
   */
  @Override
  protected boolean addPointInternal(final ITracePoint2D p) {
    this.m_points.add(p);
    return true;
  }

  /**
   * @see info.monitorenter.gui.chart.ITrace2D#getMaxSize()
   */
  public final int getMaxSize() {
    return Integer.MAX_VALUE;
  }

  /**
   * @see info.monitorenter.gui.chart.ITrace2D#getSize()
   */
  public final int getSize() {
    return this.m_points.size();
  }

  /**
   * @see info.monitorenter.gui.chart.ITrace2D#isEmpty()
   */
  public boolean isEmpty() {
    return this.m_points.size() == 0;
  }

  /**
   * @see info.monitorenter.gui.chart.ITrace2D#iterator()
   */
  public Iterator<ITracePoint2D> iterator() {
    return this.m_points.iterator();
  }

  /**
   * @see ATrace2D#removeAllPointsInternal()
   */
  @Override
  protected final void removeAllPointsInternal() {
    this.m_points.clear();
  }

  /**
   * @see ATrace2D#removePointInternal(info.monitorenter.gui.chart.ITracePoint2D)
   */
  @Override
  protected ITracePoint2D removePointInternal(final ITracePoint2D point) {
    ITracePoint2D result = null;
    if (this.m_points.remove(point)) {
      result = point;
    }
    return result;
  }

}